PROXY

index.js

const assert = require('assert')
const discoverySwarm = require('discovery-swarm')
const protocol = require('hypercore-protocol')
const peek = require('peek-length-prefixed-message')
const net = require('net')
const discoveryChannel = require('discovery-channel')

module.exports = Proxy

function Proxy (opts) {
  assert(opts.discovery, '.discovery required')
  var self = this

  opts.discovery.stream = function () {
    return protocol()
  }
  opts.discovery.hash = false

  var waiting = {}

  swarm = discoverySwarm(opts.discovery)
  swarm.on('connection', function (con, info) {
    console.log('swarm connection')
    if (info.channel) join(info.channel)
    else stream.once('open', join)

    function join (discoveryKey) {
      var key = discoveryKey.toString('hex')
      console.log('swarm key', key)
      console.log('waiting??', !!waiting[key])
      if (!waiting[key]) return con.destroy()

      waiting[key].pipe(con).pipe(waiting[key])
      delete waiting[key]
      swarm.leave(key)
    }
  })
  swarm.listen()

  var channel = discoveryChannel()

  var server = net.createServer(function (con) {
    console.log('tcp connection')
    con = peek(con, function (err, msg) {
      const key = protocol.parseDiscoveryKey(con).toString('hex')
      console.log('tcp key', key)

      swarm.join(key)
      waiting[key] = con
    }) 
  })
  server.listen(function () {
    console.log('tcp listening')
    channel.join('hypercore-proxy', server.address().port)
  })
}

package.json

{
  "name": "hypercore-proxy",
  "version": "0.0.0",
  "repository": "juliangruber/hypercore-proxy",
  "license": "MIT",
  "dependencies": {
    "discovery-channel": "^5.3.0",
    "discovery-swarm": "^4.0.2",
    "hypercore-protocol": "^4.4.0",
    "peek-length-prefixed-message": "^1.0.2",
    "signalhub": "^4.7.4"
  },
  "devDependencies": {
    "datland-swarm-defaults": "^1.0.2"
  }
}

REAMD.MD

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